GCP Cloud Function - MRLIVING/Becca GitHub Wiki

TOC

• Overview
• Types of Cloud Functions
• Cases Practice
• Notes
• Reference

Overview

• Why we need cloud functions?
  Ans. Connect and Extend Cloud Services based on event driven framework

• Vedio for Google Cloud Function

View from Message Exchange System (e.g. Pub/Sub)

• The Plugins in Horae

Competitors

• AWS Lambda vs Azure Functions vs Google Cloud Functions

Language runtimes

So far, cloud functions can be written in Node.js, Python, and Go.

Types of Cloud Functions

HTTP

• Authenticating for invocation

  curl -H "Authorization: bearer $(gcloud auth print-identity-token)" https://${REGION-PROJECT_ID}.cloudfunctions.net/${FUNCTION_NAME}
  

• Internal traffic only

Background

• Function parameters
• Terminating background functions

Events

• Event data (parameters)
• CloudEvents

Cases Practice

• Simple Restful Http server in few clicks
• Streaming data from Cloud Storage into BigQuery
  • source

Notes

• Configuring Serverless VPC Access

  • Can I connect a Cloud Memorystore for Redis instance to a resource from a different region?
    No. A resource must be in the same region as a Redis instance to connect to it. (see here)

• What kind of jobs does the cloud function good at?

  • Resource Limits
  • Time Limits

• How to set the Timezone of the cloud function?

  • set the environment variable TZ Asia/Taipei.

• How to access the local file system?

  • File system

Reference

• Firecasts & Cloud Functions
  • HTTP Triggers in Cloud Functions
  • JavaScript Promises with a Firestore Trigger
  • JavaScript Promises for sequential and parallel work
  • How does async/await work